Radial Pneumatic Drum Flow Sensing for Consistent Side Seams
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Solution Overview
Problem
Existing apparatuses for creating side seams in absorbent articles face issues with inconsistent fluid flow rates in fluid nozzles, leading to weak or brittle seams due to clogging or leakage, which are not accurately detected, affecting seam quality and consumer comfort.
Innovation Solution
A radial pneumatic distribution system with rotating fluid nozzles and sensors that monitor and adjust fluid flow rates in real-time, providing data on nozzle performance to ensure consistent seam formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If fluid nozzles are used to deliver fluid to create seams, then seam formation is achieved, but fluid flow rate consistency deteriorates due to clogging or leakage
Solution Approach 1:
The patent implements a feedback mechanism by installing flow sensors on fluid nozzles to monitor fluid flow rates in real-time. The system includes a processor that receives sensor data and generates alerts when flow rates deviate from expected ranges, enabling continuous monitoring and corrective action to maintain consistent seam quality despite potential clogging or leakage issues
Solution Approach 2:
The patent replaces manual inspection and mechanical monitoring systems with electronic sensors and digital data processing. Flow sensors electronically monitor fluid delivery, and a processor analyzes the data to detect issues, substituting traditional mechanical feedback methods with electronic sensing and computational analysis for more reliable detection
2Productivity
If multiple fluid nozzles are used in a rotating drum, then productivity is improved, but detection of mis-performing nozzles becomes difficult
Solution Approach 1:
The patent segments the monitoring system by assigning individual flow sensors to specific fluid nozzles or groups of nozzles. This segmentation allows the system to track performance of each nozzle independently, identifying which specific nozzle is underperforming while maintaining the productivity benefits of multiple nozzles operating simultaneously
Solution Approach 2:
The patent introduces an intermediary data processing system that acts as a mediator between the multiple nozzles and the operator. The processor receives data from multiple sensors, correlates nozzle position with flow rate data, and presents organized information that makes it easy to identify problematic nozzles without directly observing each one during rotation
3Strength
If strong bonds are created at side seams, then seam strength is improved, but consumer comfort deteriorates due to stiffness and roughness
Solution Approach 1:
The patent enables precise control of fluid flow rate parameters to optimize bonding quality. By maintaining consistent and appropriate fluid flow rates through sensor monitoring and alert systems, the process achieves adequate bond strength while avoiding excessive bonding that would cause stiffness and roughness, thus improving consumer comfort
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures accurate detection and adjustment of fluid flow rates, preventing weak or brittle seams, enhancing seam quality and reducing manufacturing defects.
Implementation Method 1
portions of advancing webs of material and/or component parts may be partially melted with a fluid, such as air, for example, hot air
Implementation Method 2
portions of advancing webs of material and/or component parts may be partially melted with a fluid, such as air, for example, hot air
Data Source
AI summary
The present disclosure provides radial pneumatic distribution systems, methods, and apparatuses, for example, drums, configured to bond web materials together utilizing a rotating drum having fluid nozzles and fluid flow sensors associated with the housing of the drum and configured to rotate with the drum about a central longitudinal axis as the drum rotates.